A new high‐performance blue to transmissive electrochromic material and use of silver nanowire network electrodes as substrates. Issue 10 (22nd February 2017)

• Record Type: Journal Article
• Authors: Yuksel, Recep; Ataoglu, Emre; Turan, Janset; Alpugan, Ece; Ozdemir Hacioglu, Serife; Toppare, Levent; Cirpan, Ali; Emrah Unalan, Husnu; Gunbas, Gorkem
• Is Part Of: Journal of polymer science. Volume 55:Issue 10(2017)
• Page Start: 1680
• Page End: 1686
• Publication Date: 2017-02-22
• Subjects: electrochromic materials -- conducting polymers -- silver nanowire network electrodes -- high optical contrast electrochromics; 547
• DOI: 10.1002/pola.28506
• Languages: English
• ISSNs: 0887-624X

Abstract

ABSTRACT: Synthesis of a novel, high‐performance blue to transmissive switching electrochromic material is described. The polymer (P1) was prepared by both electrochemical (P1E ) and chemical (P1C ) means from the corresponding monomer. The electrochemically synthesized polymer (P1E ) revealed 64% optical contrast change (on ITO) in the visible region and very fast switching times of 0.32 s (coloration) and 0.90 s (bleaching). On the other hand, the chemically synthesized, solution processable polymer (P1C ) also showed a high optical contrast value (49%, on ITO) with very fast switching times of 0.86 s for coloration and 0.57 s for bleaching. These high optical contrast values coupled with fast switching times place these materials along with high‐performance blue to transmissive electrochromic polymers. Significantly, these improved characteristics were achieved by side chain engineering of a known, inferior blue to transmissive polymer, PBEBT. Towards fabrication of flexible electrochromic devices, the performance ofP1C was also tested on silver nanowire network electrodes. Even though the full potential of the material could not be demonstrated, a good optical contrast of 24% was achieved using these electrodes. Under the same potential range allowed by silver nanowire network electrodes, P1C on ITO showed an optical contrast of 30%. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem.2017, 55, 1680–1686 Abstract : This study highlights the synthesis of a novel, high‐performance solution processable blue to a transmissive electrochromic polymer and the use of silver nanowire electrodes as substrates. The material shows superior electrochromic characteristics such as 49% optical contrast and very fast switching times of 0.86 s for coloration and 0.57 s for bleaching. These high profile characteristics were achieved with side chain engineering of a known, inferior blue to a transmissive polymer.